MOGADISHU, Sept 10 (Reuters) - Fighting in Mogadishu during the Muslim holy month of Ramadan has so far been some of the worst in 20 years, killing 32 civilians in four days this week, a human rights group in the Somali capital said on Thursday. The Elman Peace and Human Rights Organisation said 18 women and seven children were among the dead, and that 82 civilians were wounded between Sept. 5-8 as Islamist insurgents battled the U.N.-backed government and African Union (AU) peacekeepers. Western security agencies say the failed Horn of Africa state has become a safe haven for militant groups linked to al Qaeda who are plotting attacks across the region and beyond. "The current human rights situation in Mogadishu is one of the worst in the last 20 years for the displacement, injuring and killing of civilians," the Elman group said in a report.